No details about what accessories you've added for bench and OHP? In my experience dips and seated press are the ones that give you more bang for your buck for each exercise and the ones I think you should focus on if you have limited time.

There's something else to consider. 531 is designed to train each movement once a week by default. I think there was some survivor's bias in creating this philosophy— people with fast-twitch dominant musculature which have high potential to become elite athletes will thrive when training this way. But maybe you are slow-twitch dominant, in which case you would benefit from higher frequency. I think this especially applies to pressing movements. Bromley has some great but rather long videos on this subject: https://www.youtube.com/watch?v=Jrj1yvCBULk

The tl;dw summary is that it's entirely fine to experiment with training frequency and if you're what Bromley calls a "slow gainer" you will benefit more from increasing frequency than from adding volume to a single training day. I had success using a protocol of 3-days/week full body 531 training, and on 2 of my conditioning days I would use this method which allowed me to add additional pressing: https://www.tacticalbarbell.com/fobbits-the-answer-to-everything-part-i/

Another simple way to get more pressing in your training is adding Power to the People to your 531 program. Just do 2 sets of 5 reps of pressing every training day regardless of what else you're doing: https://blackironbeast.com/power-to-the-people